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### Bug Summary
Issue occurs when `--parachain-single-process` flag is not provided
### Bug Description
It is observed that when `--parachain-single-process` flag is not provided PVF execution time…
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In #120914 we downgraded Xcode from 14 to 13 due to two issues:
* [`invalid r_symbolnum`](https://github.com/rust-lang/rustc_codegen_cranelift/issues/1456) when testing cranelift
* cmake fails to …
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I've tracked down a few things that are preventing this from happening.
1. `packed_struct` requires std by default
2. There are a few uses of std in `cranelift-codegen` and `cranelift-codegen-shar…
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Thanks for filing an issue! Please fill out the TODOs below.
### `.clif` Test Case
```
function u0:0(f32x2) -> f32x2 system_v {
ss0 = explicit_slot 16
ss1 = explicit_slot 16
sig0…
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Would it be possible to use [https://github.com/bjorn3/rustc_codegen_cranelift](https://github.com/bjorn3/rustc_codegen_cranelift) to do speed up the REPL by doing JIT compilation?
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We'll need to add support for exception handling in Wasmer (runtime/VM level):
https://github.com/WebAssembly/exception-handling
Basically, Wasmer needs add the exception-handling WAST tests to our …
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```rust
move |a: usize| {
let val: usize;
if Wrapping(a) + Wrapping(0x5) < Wrapping(a) {
val = 1;
} else {
val = 2;
}
val
}
```
```asm
---- cmp rsi, -0…
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### Motivation
I am not entirely sure what the process is for removing `cfg(web_sys_unstable_apis`) or how the WebIDL works, but according to [MDN](https://developer.mozilla.org/en-US/docs/Web/API/…
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```
$ cat config.toml
[rust]
codegen-backends = ["cranelift"]
$ x.py test --stage 0 src/tools/miri
error: failed to run `rustc` to learn about target-specific information
Caused by:
proces…
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The way that wasm_bindgen in Rust can access functions that are defined externally, how does one allow the WASM to call dart functions?